CN108442179A - A kind of plant fiber load graphene prepares paper substrate air filting material and preparation method thereof - Google Patents
A kind of plant fiber load graphene prepares paper substrate air filting material and preparation method thereof Download PDFInfo
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- CN108442179A CN108442179A CN201810154119.2A CN201810154119A CN108442179A CN 108442179 A CN108442179 A CN 108442179A CN 201810154119 A CN201810154119 A CN 201810154119A CN 108442179 A CN108442179 A CN 108442179A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 176
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 159
- 239000000835 fiber Substances 0.000 title claims abstract description 85
- 239000000463 material Substances 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title claims abstract description 39
- 239000000758 substrate Substances 0.000 title claims abstract description 30
- 238000003756 stirring Methods 0.000 claims abstract description 59
- 239000000725 suspension Substances 0.000 claims abstract description 48
- 238000001914 filtration Methods 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000014759 maintenance of location Effects 0.000 claims abstract description 20
- 239000002270 dispersing agent Substances 0.000 claims abstract description 19
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 19
- 241000196324 Embryophyta Species 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 15
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 15
- 150000001768 cations Chemical class 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 229920002907 Guar gum Polymers 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000000665 guar gum Substances 0.000 claims abstract description 13
- 229960002154 guar gum Drugs 0.000 claims abstract description 13
- 235000010417 guar gum Nutrition 0.000 claims abstract description 13
- 229920002472 Starch Polymers 0.000 claims abstract description 12
- 125000002091 cationic group Chemical group 0.000 claims abstract description 12
- 239000008107 starch Substances 0.000 claims abstract description 12
- 235000019698 starch Nutrition 0.000 claims abstract description 12
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 10
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 10
- 239000000243 solution Substances 0.000 claims description 36
- 239000002562 thickening agent Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- 229920000742 Cotton Polymers 0.000 claims description 12
- 239000002356 single layer Substances 0.000 claims description 12
- 229920001732 Lignosulfonate Polymers 0.000 claims description 11
- 239000004117 Lignosulphonate Substances 0.000 claims description 11
- 235000019357 lignosulphonate Nutrition 0.000 claims description 11
- 239000011122 softwood Substances 0.000 claims description 11
- 239000011121 hardwood Substances 0.000 claims description 10
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 9
- 229920001131 Pulp (paper) Polymers 0.000 claims description 9
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 9
- 229920003043 Cellulose fiber Polymers 0.000 claims description 7
- 229920000058 polyacrylate Polymers 0.000 claims description 7
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 6
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 claims description 6
- 229940063834 carboxymethylcellulose sodium Drugs 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 239000006185 dispersion Substances 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 229910002804 graphite Inorganic materials 0.000 description 17
- 239000010439 graphite Substances 0.000 description 17
- 150000001336 alkenes Chemical class 0.000 description 13
- 238000000576 coating method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- -1 graphite alkene Chemical class 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000007306 functionalization reaction Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241001343274 Dichrostachys spicata Species 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
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- 238000007598 dipping method Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/08—Filter paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
Landscapes
- Paper (AREA)
Abstract
A kind of plant fiber load graphene of the present invention prepares paper substrate air filting material and preparation method thereof, provide a kind of preparation process of graphene paper, first with dispersant under conditions of high-speed stirred, graphene uniform dispersion is prepared into suspension, then plant fiber is distributed in water using dispersants such as polyethylene glycol oxides, it obtains suspension and is kept stirring, scattered graphene suspension is added in the aqueous dispersion of plant fiber according to a certain percentage, after mixing, absorption carriage is completed under retention agent (polyacrylamide) effect, reinforcing agent (cationic starch is added later, cation guar gum), drainage and formation is by squeezing, graphene paper base air filter material is obtained after drying.Filtering material filtering accuracy height, good permeability, good toughness, the intensity height prepared by this technique, can be used as high-quality and efficient air filting material, while major part is now environment-friendly degradable using plant, is had a extensive future.
Description
Technical field
The present invention relates to air filtration paper base material field, more particularly to a kind of paper substrate filtering material containing graphene
Preparation method.
Background technology
With the increasingly exacerbation of air pollution, the pollutant especially fine grained pollutant (PM2.5) in air is to cause
One of an important factor for haze.At the same time, fine particle pollutant is because its specific surface area is very big, the nuisance in air
Matter such as bacterium, virus etc. is readily adsorbed in its surface, seriously affects people's health and quality of life.With people's environmental protection, peace
Entirely, health perception is increasingly enhanced, and the demand to air cleaning unit and material gradually increases.
Graphene (Graphene) be one kind by carbon atom with sp2The cellular flat film that hybrid form is formed, is one
There are one the quasi- two-dimensional material of atomic layer level thickness, monoatomic layer graphite only is done so being called for kind.The common power production of graphene
Method be mechanical stripping method, oxidation-reduction method, SiC epitaxial growth methods, film production method is chemical vapour deposition technique
(CVD).Due to its very good intensity, flexible, conductive, heat conduction, optical characteristics, physics, materialogy, electronic information,
The fields such as computer, aerospace are obtained for significant progress.Since graphene has larger specific surface area, adsorption energy
Power is the several times of normal activated carbon sorbing material, huge in the application potential of filtering material field.
Major part material for air purification generally use dry or wet forming technology at present, is prepared non-woven fabrics or paper substrate
The synthetic fibers of filtering material, selection have polyolefine fiber, polyester fiber, polyphenylene sulfide fibre etc.；Natural fiber has needlebush
Fiber, broad-leaved wood fiber, flaxen fiber, cotton fiber etc..Natural fiber have good physical filtering crown_interception, gas permeability, can
Degradability.
The method that graphene is prepared in air filting material is obtained essentially by two methods.First, using graphene is filled out
Be charged in organic matrix and graphene composite fibre obtained by spinning, be then prepared with graphene by nonwoven forming or
The filtering material of functionalization graphene, as patent CN201610296734.8 it is a kind of be applied to purification air filter membrane material and
Preparation method, a kind of 201510012953.4 preparation methods of Kynoar-graphene oxide composite hollow fiber membrane are special
Profit utilizes the blended fiber that graphene is loaded at fine preparation of graphene and organism, such method is mainly by polymer base material
Bonding and package action complete graphene load, greatly reduce the specific surface area of graphene and the performance of suction-operated.
Second is that preparing functional graphene coating using graphene, top finishing then is carried out to non-woven fabrics or paper base material with it and is obtained
Load the filtering material of graphite ene coatings.This method is on the one hand since the covering with paint of coating fluid and dipping are by non-woven fabrics or paper base material
The influence of structure and gap, therefore be difficult to control graphene coating in the distributing homogeneity of base material, the especially graphite of material Z-direction
Alkene distributing homogeneity is worse.The intensity of another aspect graphite ene coatings derives from adhesive component therein, secured to obtain
Anchoring strength of coating must add enough gluing components, the air permeability of filtering material will substantially reduce, and influence to try out, simultaneously
Also the performance of graphene can be largely effected on.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of preparation sides of graphene air filtration paper base material
Method, few, graphene is evenly distributed and keeps its suction to greatest extent fiber filter material prepared by this method with gluing agent content
The characteristics of attached characteristic.
In order to solve the above technical problems, the technical scheme is that：
A kind of plant fiber load graphene prepares paper substrate air filting material, which is by parts by weight below
Several substances are prepared, respectively 100 parts of fiber, 5~20 parts of graphene, 0.1~3 part of thickener, retention agent 0.05~
0.15 part, 0.5~3 part of reinforcing agent, 0.2~0.8 part of dispersant.
The proportioning can complete the process that graphene is adequately supported on fiber, the additive kind used in preparation process
Class has thickener, presence agent, reinforcing agent, dispersant, so that the amount of the adhesive used in the loading process of graphene is reduced, simultaneously
Make mineral carbon load in fiber surface or gap using additive, improve the effective surface area of graphene, makes the suction of graphene
The enhancing of attached effect, improve graphene fiber surface the uniformity.
Preferably, the fiber by softwood pulp, hardwood pulp, cotton pulp one kind, two or three mixing extraction and
At.
Preferably, the graphene is single-layer graphene or the multi-layer graphene of the number of plies≤10.
It is further preferred that thickness≤15nm of the graphene；
Preferably, the thickener be polyethylene glycol oxide, carboxymethylcellulose sodium, one kind in polyacrylate, two kinds
Or three kinds of mixing compositions.
Preferably, the retention agent is polyacrylamide.
It is further preferred that the molecular weight of the presence agent polyacrylamide is 200~4,000,000.
Preferably, the reinforcing agent is one or both of cation guar gum, cationic starch composition.
Preferably, the dispersant is in lauryl sodium sulfate, hexadecyltrimethylammonium chloride, lignosulphonates
One kind, two or three composition.
The preparation method of graphene paper base air filter material, includes the following steps：
(1) preparation of graphene dispersing solution
Dispersant is mixed according to a certain percentage with water and is uniformly dispersed, graphene is added in side stirring, then makes graphene point
It dissipates uniformly, obtains graphene dispersing solution.
(2) preparation of fibrous suspension
Paper pulp and water be blended in it is fully dispersed in fluffer discongest, thickener is added after dilution, stirring is obtained to being uniformly mixed
To stable fibrous suspension.
(3) load is blended in graphite fiber alkene
The graphene dispersing solution prepared is added to by a certain percentage in the fibrous suspension prepared, is stirred until homogeneous,
Then retention agent is added, continues surface or inside that stirring makes graphene fully load to fiber.
(4) drainage and formation
Reinforcing agent is added in the blended liquid of graphene and fiber, is diluted after stirring evenly, then passes through under vacuum condition
Graphene paper substrate filtering material is obtained after dehydration, squeezing, drying.
Preferably, the graphene dispersion even method in step (1) is ultrasonic disperse.
It is further preferred that ultrasonic disperse ultrasonic disperse 1h under the conditions of 50 DEG C.
Preferably, step (1) and (2) mixing speed are 400~600 turns/min, time 20-60min.
Preferably, step (2) discongests a concentration of 3-5%, discongests rear pulp dilution to 0.2~1.5%.
Preferably, stirring action speed of agitator is 60~90 turns/min, front and back point of mixing time at two in step (3)
It Wei not 10min and 20min.
Preferably, a concentration of 0.01~0.2% after being diluted in step (4).
The effect of each component is as follows：
Fiber：It is natural plant fibre, the effect in filtering material is made by Physical entrapment effect and inertia impact
It is purified with to air, while there is fiber absorbability and gas permeability well, fiber to act synergistically with graphene, fiber will
The fine pollutants of air are retained and are absorbed, and then graphene adequately adsorbs pollutant, reach purification air
Purpose.
Dispersant：Graphene is set adequately to be distributed in aqueous solution.
Thickener：So that the viscosity of solution is increased, solution is made to keep uniform and stable suspended state.
Retention agent：Polyacrylamide reduces the resistance of graphene and fiber during load.
Reinforcing agent：Cationic starch, cation guar gum can enhance graphene and it is fiber-loaded during binding force.
Above several additives it is graphene-supported in fiber during, synergistic effect can be such that the effect of load reaches
To best, also graphene made to fully play suction-operated in fiber surface, reduce the usage amount of adhesive.
The characteristics of technique is：First with surface active dispersing agent aqueous dispersion dispersed graphite alkene, graphene is obtained
Dispersion liquid；Then the dispersants stable fibers suspension such as polyethylene glycol oxide are utilized, and are kept stirring；Graphene dispersing solution is added
Into fibrous suspension, absorption carriage is completed under retention agent (polyacrylamide) effect, reinforcing agent is added later, and (cation forms sediment
Powder, cation guar gum), drainage and formation obtains graphene paper base air filter material after squeezing, drying.Pass through this technique
The filtering material filtering accuracy height of preparation, good permeability, good toughness, intensity are high, high-quality air filtering material are can be used as, before
Scape is extensive.
Beneficial effects of the present invention：
(1) graphene paper substrate filtering material of the present invention, filter efficiency is high, resistance is small, can effective filter small particles dirt
Contaminate object and organic pollution；
(2) graphene paper substrate filtering material of the invention is directly arrived graphene-supported by absorption and drainage and formation process
In the surface of single fiber or the gap of fiber surface, obtained material graphene distribution consistency degree is high.
(3) graphene paper substrate filtering material of the invention is conductive, can extend electro-catalysis work(with antistatic
Energy.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
In order to better understand the present invention, it is further illustrated with reference to specific embodiment.
Embodiment 1：
(1) preparation of graphene dispersing solution
0.2% lauryl sodium sulfate is mixed with water and is uniformly dispersed, 5% single-layer graphene is added while stirring,
Mixing speed is 400 turns/min, and time 20min, ultrasonic disperse ultrasonic disperse 1h under the conditions of 50 DEG C obtain graphene dispersion
Liquid.
(2) preparation of fibrous suspension
(softwood pulp, hardwood pulp, cotton pulp are according to 6 for paper pulp:1:3 ratio) be blended in water it is fully dispersed in fluffer
It discongests, obtains a concentration of 5% pulp suspension, be diluted to the polyethylene glycol oxide of addition 0.1% after 1.5%, stirring to mixing
Uniformly, stable fibrous suspension is obtained.
(3) load is blended in graphite fiber alkene
The graphene dispersing solution prepared is added in the fibrous suspension prepared in 5% ratio, stirring (60 turns/
Min, 10min) to uniform, 0.05% retention agent polyacrylamide is then added, continuing to stir (60 turns/min, 20min) makes
Graphene fully loads to the surface or inside of fiber.
(4) drainage and formation
0.5% cation guar gum is added in the blended liquid of graphene and fiber, stirs evenly and is diluted to concentration
Between 0.01%, then by being dehydrated, squeezing under vacuum condition, obtain graphene paper substrate filtering material after drying.
Embodiment 2：
(1) preparation of graphene dispersing solution
0.4% hexadecyltrimethylammonium chloride is mixed with water and is uniformly dispersed, 12% single layer is added while stirring
Graphene, mixing speed are 500 turns/min, and time 40min, ultrasonic disperse ultrasonic disperse 1h under the conditions of 50 DEG C obtain graphite
Alkene dispersion liquid.
(2) preparation of fibrous suspension
(softwood pulp, hardwood pulp, cotton pulp are according to 6 for paper pulp:1:3 ratio) be blended in water it is fully dispersed in fluffer
It discongests, obtains a concentration of 4% pulp suspension, be diluted to the thickener carboxymethylcellulose sodium of addition 1.5% after 1%, stir
It mixes to being uniformly mixed, obtains stable fibrous suspension.
(3) load is blended in graphite fiber alkene
The graphene dispersing solution prepared is added in the fibrous suspension prepared in 12% ratio, stirring (80 turns/
Min, 10min) to uniform, 0.1% retention agent polyacrylamide is then added, continuing to stir (75 turns/min, 20min) makes stone
Black alkene fully loads to the surface or inside of fiber.
(4) drainage and formation
1.5% cationic starch is added in the blended liquid of graphene and fiber, stirs evenly and is diluted to concentration 0.1%
Between, then by being dehydrated, squeezing under vacuum condition, obtain graphene paper substrate filtering material after drying.
Embodiment 3：
(1) preparation of graphene dispersing solution
0.8% lignosulphonates are mixed with water and are uniformly dispersed, 20% single-layer graphene, stirring are added while stirring
Speed is 600 turns/min, and time 60min, ultrasonic disperse ultrasonic disperse 1h under the conditions of 50 DEG C obtain graphene dispersing solution.
(2) preparation of cellulose fibre suspension
(softwood pulp, hardwood pulp, cotton pulp are according to 6 for paper pulp:1:3 ratio) be blended in water it is fully dispersed in fluffer
It discongests, obtains a concentration of 3% pulp suspension, be diluted to the thickener polyacrylate of addition 3% after 0.2%, stirring is extremely
It is uniformly mixed, obtains stable fibrous suspension.
(3) load is blended in graphite fiber alkene
The graphene dispersing solution prepared is added in the fibrous suspension prepared in 20% ratio, stirring (90 turns/
Min, 10min) to uniform, 0.15% retention agent polyacrylamide is then added, continuing to stir (90 turns/min, 20min) makes
Graphene fully loads to the surface or inside of fiber.
(4) drainage and formation
(cation guar gum, cationic starch ratio are the reinforcing agent of addition 3% in the blended liquid of graphene and fiber
1:1) it, stirs evenly and is diluted between concentration 0.2%, then by being dehydrated, squeezing under vacuum condition, obtain graphene after drying
Paper substrate filtering material.
Comparative example 1：
The preparation process of step (1) graphene dispersing solution in embodiment 3 is changed to " by 1.0% lignosulphonates and water
Mixing is uniformly dispersed, and 20% single-layer graphene is added while stirring, and mixing speed is 600 turns/min, time 60min, ultrasound
Ultrasonic disperse 1h, obtains graphene dispersing solution under the conditions of being dispersed in 50 DEG C ", other are the same as described in embodiment 3.
Comparative example 2：
The preparation process of step (1) graphene dispersing solution in embodiment 3 is changed to " by 0.8% lignosulphonates and water
Mixing is uniformly dispersed, and 25% single-layer graphene is added while stirring, and mixing speed is 600 turns/min, time 60min, ultrasound
Ultrasonic disperse 1h, obtains graphene dispersing solution under the conditions of being dispersed in 50 DEG C ", other are the same as described in embodiment 3.
Comparative example 3：
The preparation process of step (2) cellulose fibre suspension in embodiment 3 is changed to " paper pulp (softwood pulp, leaf wood
Slurry, cotton pulp are according to 6:1:3 ratio) with water be blended in it is fully dispersed in fluffer discongest, obtain a concentration of 3% pulp suspension
Liquid, is diluted to the thickener polyacrylate of addition 3.5% after 0.2%, and stirring obtains stable fiber suspension to being uniformly mixed
Liquid ", other are the same as described in embodiment 3.
Comparative example 4：
Step (3) graphite fiber alkene in embodiment 3 is blended in loading process and is changed to that " ratio in 20% will prepare
Graphene dispersing solution is added in the fibrous suspension prepared, and stirring (90 turns/min, 10min) is then added to uniform
0.18% retention agent polyacrylamide continues to stir the surface that (90 turns/min, 20min) make graphene fully load to fiber
Or internal ", other are the same as described in embodiment 3.
Comparative example 5：
It is changed to step (4) drainage and formation process in embodiment 3 " to be added 3.5% in the blended liquid of graphene and fiber
Reinforcing agent (cation guar gum, cationic starch ratio be 1:1) it, stirs evenly and is diluted between concentration 0.2%, then pass through
It crosses under vacuum condition and is dehydrated, squeezes, obtaining graphene paper substrate filtering material after drying ".
Embodiment 4：
(1) preparation of graphene dispersing solution
By 0.8% dispersant, (lauryl sodium sulfate, hexadecyltrimethylammonium chloride, lignosulphonates are according to 1:
1:1 calculates, relative to fiber quality, similarly hereinafter) it mixes and is uniformly dispersed with water, the single-layer graphene of addition 20%, is stirred while stirring
It is 600 turns/min to mix speed, and time 60min, ultrasonic disperse ultrasonic disperse 1h under the conditions of 50 DEG C obtain graphene dispersing solution.
(2) preparation of fibrous suspension
(softwood pulp, hardwood pulp, cotton pulp are according to 6 for paper pulp:1:3 ratio) be blended in water it is fully dispersed in fluffer
It discongests, obtains a concentration of 3% pulp suspension, be diluted to thickener (polyethylene glycol oxide, the carboxymethyl of addition 3% after 0.2%
Cellulose is received, polyacrylate is according to 3:1:1 ratio addition), stirring obtains stable fibrous suspension to being uniformly mixed.
(3) load is blended in graphite fiber alkene
The graphene dispersing solution prepared is added in the fibrous suspension prepared in 20% ratio, stirring (90 turns/
Min, 10min) to uniform, 0.15% retention agent polyacrylamide is then added, continuing to stir (90 turns/min, 20min) makes
Graphene fully loads to the surface or inside of fiber.
(4) drainage and formation
Reinforcing agent is added in the blended liquid of graphene and fiber, and (cation guar gum, cationic starch ratio are 1:1),
It stirs evenly and is diluted between concentration 0.2%, then by being dehydrated, squeezing under vacuum condition, obtain graphene paper substrate after drying
Filtering material.
Embodiment 5：
(1) preparation of graphene dispersing solution
By 0.8% dispersant, (lauryl sodium sulfate, hexadecyltrimethylammonium chloride, lignosulphonates are according to 1:
1:1 calculates, relative to fiber quality, similarly hereinafter) it mixes and is uniformly dispersed with water, the multi-layer graphene of addition 20%, is stirred while stirring
It is 600 turns/min to mix speed, and time 60min, ultrasonic disperse ultrasonic disperse 1h under the conditions of 50 DEG C obtain graphene dispersing solution.
(2) preparation of fibrous suspension
(softwood pulp, hardwood pulp, cotton pulp are according to 6 for paper pulp:1:3 ratio) be blended in water it is fully dispersed in fluffer
It discongests, obtains a concentration of 3% pulp suspension, be diluted to thickener (polyethylene glycol oxide, the carboxymethyl of addition 3% after 0.2%
Cellulose is received, polyacrylate is according to 3:1:1 ratio addition), stirring obtains stable fibrous suspension to being uniformly mixed.
(3) load is blended in cellulose fibre graphene
The graphene dispersing solution prepared is added in the fibrous suspension prepared in 20% ratio, stirring (90 turns/
Min, 10min) to uniform, 0.15% retention agent polyacrylamide is then added, continuing to stir (90 turns/min, 20min) makes
Graphene fully loads to the surface or inside of fiber.
(4) drainage and formation
Reinforcing agent is added in the blended liquid of graphene and fiber, and (cation guar gum, cationic starch ratio are 1:1),
It stirs evenly and is diluted between concentration 0.2%, then by being dehydrated, squeezing under vacuum condition, obtain graphene paper substrate after drying
Filtering material.
Embodiment 6：
(1) preparation of graphene dispersing solution
By 0.8% dispersant, (lauryl sodium sulfate, hexadecyltrimethylammonium chloride, lignosulphonates are according to 1:
1:1 calculates, relative to fiber quality, similarly hereinafter) it mixes and is uniformly dispersed with water, the single-layer graphene of addition 20%, is stirred while stirring
It is 600 turns/min to mix speed, and time 60min, ultrasonic disperse ultrasonic disperse 1h under the conditions of 50 DEG C obtain graphene dispersing solution.
(2) preparation of fibrous suspension
Softwood pulp and water be blended in it is fully dispersed in fluffer discongest, obtain a concentration of 3% pulp suspension, dilute
(polyethylene glycol oxide, carboxymethylcellulose sodium, polyacrylate are according to 3 for the thickener of addition 3% after to 0.2%:1:1 ratio
Addition), stirring obtains stable fibrous suspension to being uniformly mixed.
(3) load is blended in graphite fiber alkene
The graphene dispersing solution prepared is added in the fibrous suspension prepared in 20% ratio, stirring (90 turns/
Min, 10min) to uniform, 0.15% retention agent polyacrylamide is then added, continuing to stir (90 turns/min, 20min) makes
Graphene fully loads to the surface or inside of fiber.
(4) drainage and formation
Reinforcing agent is added in the blended liquid of graphene and fiber, and (cation guar gum, cationic starch ratio are 1:1),
It stirs evenly and is diluted between concentration 0.2%, then by being dehydrated, squeezing under vacuum condition, obtain graphene paper substrate after drying
Filtering material.
Embodiment 7：
(1) preparation of graphene dispersing solution
By 0.8% dispersant, (lauryl sodium sulfate, hexadecyltrimethylammonium chloride, lignosulphonates are according to 1:
1:1 calculates, relative to fiber quality, similarly hereinafter) it mixes and is uniformly dispersed with water, the single-layer graphene of addition 20%, is stirred while stirring
It is 600 turns/min to mix speed, and time 60min, ultrasonic disperse ultrasonic disperse 1h under the conditions of 50 DEG C obtain graphene dispersing solution.
(2) preparation of fibrous suspension
Softwood pulp, hardwood pulp are according to 5:1 ratio and water be blended in it is fully dispersed in fluffer discongest, obtain concentration
For 3% pulp suspension, it is diluted to thickener (polyethylene glycol oxide, carboxymethylcellulose sodium, poly- third of addition 3% after 0.2%
Olefin(e) acid ester is according to 3:1:1 ratio addition), stirring obtains stable fibrous suspension to being uniformly mixed.
(3) load is blended in graphite fiber alkene
The graphene dispersing solution prepared is added in the fibrous suspension prepared in 20% ratio, stirring (90 turns/
Min, 10min) to uniform, 0.15% retention agent polyacrylamide is then added, continuing to stir (90 turns/min, 20min) makes
Graphene fully loads to the surface or inside of fiber.
(4) drainage and formation
Reinforcing agent is added in the blended liquid of graphene and fiber, and (cation guar gum, cationic starch ratio are 1:1),
It stirs evenly and is diluted between concentration 0.2%, then by being dehydrated, squeezing under vacuum condition, obtain graphene paper substrate after drying
Filtering material.
Embodiment 8：
(1) preparation of graphene dispersing solution
By 0.8% dispersant, (lauryl sodium sulfate, hexadecyltrimethylammonium chloride, lignosulphonates are according to 1:
1:1 calculates, relative to fiber quality, similarly hereinafter) it mixes and is uniformly dispersed with water, the single-layer graphene of addition 20%, is stirred while stirring
It is 600 turns/min to mix speed, and time 60min, ultrasonic disperse ultrasonic disperse 1h under the conditions of 50 DEG C obtain graphene dispersing solution.
(2) preparation of fibrous suspension
Hardwood pulp, cotton pulp are according to 5:1 ratio and water be blended in it is fully dispersed in fluffer discongest, obtain a concentration of
3% pulp suspension is diluted to thickener (polyethylene glycol oxide, carboxymethylcellulose sodium, the polypropylene of addition 3% after 0.2%
Acid esters is according to 3:1:1 ratio addition), stirring obtains stable fibrous suspension to being uniformly mixed.
(3) load is blended in graphite fiber alkene
The graphene dispersing solution prepared is added in the fibrous suspension prepared in 20% ratio, stirring (90 turns/
Min, 10min) to uniform, 0.15% retention agent polyacrylamide is then added, continuing to stir (90 turns/min, 20min) makes
Graphene fully loads to the surface or inside of fiber.
(4) drainage and formation
Reinforcing agent is added in the blended liquid of graphene and fiber, and (cation guar gum, cationic starch ratio are 1:1),
It stirs evenly and is diluted between concentration 0.2%, then by being dehydrated, squeezing under vacuum condition, obtain graphene paper substrate after drying
Filtering material.
Comparative example 6
The graphene that preparation method using graphene fiber is 20% is filled into organic matrix obtains stone by spinning
Then black alkene composite fibre is prepared the filtering material with graphene or functionalization graphene by nonwoven forming, prepares
Obtain identical quantitative filter material.
Comparative example 7
The load capacity for being 20% according to graphene relative amount, graphene prepare functional graphene coating, then use it
Top finishing is carried out to non-woven fabrics or paper base material and obtains the filtering material of load graphite ene coatings, is prepared identical quantitative
Filter material.
The sample obtained in embodiment 1-13 is >=0.3um for grain size according under the test wind speed of 5.33cm/s
The removal efficiency of particle object is evaluated, as a result as follows：
The strainability of embodiment sample
Summary and conclusion
This result of study shows that graphene air filtration paper base material prepared by the application has good filter effect,
When 0.8% dispersant, wherein lauryl sodium sulfate, hexadecyltrimethylammonium chloride, lignosulphonates are according to 1:1:1,
20% mono-layer graphite, each component softwood pulp, hardwood pulp, cotton pulp are according to 6 in paper pulp:1:When 3 ratio addition, formation
Sorbing material effect is best, and the ratio that graphene is added to fibrous suspension is 20%, and the additional proportion of presence agent is 0.15%,
The ratio of the addition of suitable reinforcing agent is (3%) accordingly, and obtained filtering material resistance is minimum, filter efficiency highest.
The influence of component in composition：
When dispersant excess, polymer content raising in filter material can be caused to influence its gas permeability；When thickener excess,
Filter material gap can be caused to become smaller, influence filter efficiency；When retention agent excess, the excess on the one hand improving fiber fines is stayed
It, while retention agent can excessively wad a quilt with cotton poly- because of graphene and then influence filter efficiency；When reinforcing agent excess, filter material can be caused
The densification that structure becomes, causes filter efficiency to reduce.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not limited by embodiment
System, other any changes made without departing from the spirit and principles of the present invention, modification, combination, replacement, simplification should be
Equivalence replacement mode, is included within the scope of the present invention.
Claims (10)
1. a kind of plant fiber load graphene prepares paper substrate air filting material, which is characterized in that the weight of filtering material raw material
It is respectively 100 parts of fiber, 5~20 parts of graphene, 0.1~3 part of thickener, 0.05~0.15 part of retention agent, reinforcing agent to measure number
0.5~3 part, 0.2~0.8 part of dispersant.
2. a kind of plant fiber load graphene according to claim 1 prepares paper substrate air filting material, feature exists
In：The fiber include one kind in softwood pulp, hardwood pulp, cotton pulp, two or three.
3. a kind of plant fiber load graphene according to claim 1 prepares paper substrate air filting material, feature exists
In：Single-layer graphene or the multi-layer graphene of the number of plies≤10, thickness≤15nm can be selected in the graphene.
4. a kind of plant fiber load graphene according to claim 1 prepares paper substrate air filting material, feature exists
In：Thickener be polyethylene glycol oxide, carboxymethylcellulose sodium, one kind in polyacrylate, two or three.
5. a kind of plant fiber load graphene according to claim 1 prepares paper substrate air filting material, feature exists
In：Retention agent is polyacrylamide, and molecular weight is 200~4,000,000.
6. a kind of plant fiber load graphene according to claim 1 prepares paper substrate air filting material, feature exists
In：Reinforcing agent is the cooperation of one or both of cation guar gum, cationic starch.
7. a kind of plant fiber load graphene according to claim 1 prepares paper substrate air filting material, feature exists
In：Dispersant be lauryl sodium sulfate, hexadecyltrimethylammonium chloride, one kind in lignosulphonates, two or three.
8. a kind of plant fiber load graphene prepares the preparation method of paper substrate air filting material, it is characterised in that：Specific step
Suddenly it is：
(1) preparation of graphene dispersing solution
Dispersant is mixed according to a certain percentage with water and is uniformly dispersed, graphene is added while stirring, then ultrasonic disperse is to equal
It is even, obtain graphene dispersing solution.
(2) preparation of cellulose fibre suspension
Paper pulp fiber and water be blended in it is fully dispersed in fluffer discongest, thickener is added after dilution, stirring is obtained to being uniformly mixed
To stable fibrous suspension.
(3) load is blended in cellulose fibre graphene
The graphene dispersing solution prepared is added to by a certain percentage in the cellulose fibre suspension prepared, is stirred to equal
It is even, retention agent is then added, continues surface or inside that stirring makes graphene fully load to fiber.
(4) drainage and formation
Reinforcing agent is added in the blended liquid of graphene and cellulose fibre, stir evenly be diluted to concentration 0.01~0.2% it
Between, then by being dehydrated, squeezing under vacuum condition, obtain graphene paper substrate filtering material after drying.
9. a kind of plant fiber load graphene according to claim 8 prepares the preparation side of paper substrate air filting material
Method, it is characterised in that：The step (1) and (2) mixing speed are 400~600 turns/min, time 20-60min；Ultrasound point
Ultrasonic disperse 1h under the conditions of being dispersed in 50 DEG C；
Preferably, the step (2) discongests a concentration of 3-5%, discongests rear pulp dilution to 0.2~1.5%.
10. a kind of plant fiber load graphene according to claim 8 prepares the preparation side of paper substrate air filting material
Method, it is characterised in that：In step (3) two at stirring action speed of agitator be 60~90 turns/min, front and back point of mixing time
It Wei not 10min and 20min.
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